Interface Numbering; Wan And Lan Interface Numbering - Cisco 2691 - VPN Bundle Router Hardware Installation Manual

Chapter 1 Overview of Cisco 2600 Series Routers
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Interface Numbering

Each interface (port) on a Cisco 2610, Cisco 2620, and Cisco 2650 series router is identified by number
as described in the following sections.

WAN and LAN Interface Numbering

Cisco 2600 series routers contain the following WAN and LAN interface types:
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The numbering format is interface-type slot-number/Interface-number. Two examples are:
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The slot number is 0 for all built-in interfaces and 0 for all WIC interfaces; the slot number is 1 for
network module interfaces.
Interface (port) numbers begin at 0 for each interface type, and continue from right to left and (if
necessary) from bottom to top.
Figure 1-11
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OL-2171-06
For information on installing AIMs, refer to the following documents:
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AIM Installation Quick Start Guide: Cisco 2600, 3600, and 3700 Series
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Installing Advanced Integration Modules in Cisco 2600 Series, Cisco 3600 Series, and
Cisco 3700 Series Routers
For information about installing DRAM, SDRAM, NVRAM, and flash memory SIMMs, refer to the
following hardware configuration note:
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Upgrading System Memory, Internal Flash Memory, and Root ROM in Cisco 2600 Series
Routers
For information about installing CompactFlash memory cards, refer to the following hardware
configuration note:
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Installing and Formatting Cisco 2691, Cisco 3631, and Cisco 3700 Compact Flash Memory
Cards
Built-in LAN interfaces: Ethernet, FastEthernet, Token Ring
Two or three slots in which you can install WAN interface cards (WICs)
One slot in which you can install a network module
Ethernet 0/0
Serial 1/2
shows a router of 1-RU height with:
A WIC in each WIC slot (containing interface Serial 0/0 in physical slot W0, and interface Serial
0/1 in physical slot W1)
A 4-serial-port network module in slot 1 (containing the following ports: Serial 1/0, Serial 1/1,
Serial 1/2, and Serial 1/3)
First built-in Ethernet interface—Ethernet 0/0
Second built-in Ethernet interface—Ethernet 0/1, or optionally in Cisco 2612 and Cisco 2613
routers only: Token Ring interface 0/0
Cisco 2600 Series Routers Hardware Installation Guide
Interface Numbering
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